Question

You used 300 grams of Na2CO3 to wash one load of laundry. How many moles of laundry detergent did you use?

Answer 1

Answer: The number of moles of laundry detergent used is, 2.83 moles.

Explanation : Given,

Mass of
`Na_2CO_3` = 300 g

Molar mass of
`Na_2CO_3` = 106 g/mol

Formula used :

`\text{Moles of }Na_2CO_3=\frac{\text{Given mass }Na_2CO_3}{\text{Molar mass }Na_2CO_3}`

Now put all the given values in this formula, we get:

`\text{Moles of }Na_2CO_3=(300g)/(106g/mol)`

`\text{Moles of }Na_2CO_3=2.83mol`

Therefore, the number of moles of laundry detergent used is, 2.83 moles.